1. Chaiken, S. (1987). The heuristic model of persuasion. In M.P. Zanna, J.M. Olson, & C.P. Herman (Eds.), Social influence: The Ontario Symposium (Vol. 5, pp. 3-39). Hillsdale, NJ: Erlbaum.
2. Egan, K. (1997). The educated mind: How cognitive tolls shape our understanding. Chicago: University of Chicago Press.